Oil pump



H. E, RHOADS.

OIL PUMP.

APPLlCATION FiLED SEPT, 16. 1918.

Patentedluly 4, 119220 INVENITOR. War/y fihaaas A TTORNEY amie.

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HARRY E. RHOADS, F TOLEDO, OHIO, ASSIGNOR TO THE WILLYS-OVERLAND OOMPANY, 0F TOLEDO, OHIO, A COItPORATION OF OHIO.

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To all whom it may concern Be it known thatI, HARRY .E. RHoAns, a citizen of the United States, residing at Toledo, county of Lucas, and State of Ohio,

have invented certain new and useful Immovements in Oil Pumps, of which I declare the following to be a full, clear, and exact description; i a

This invention relates to a lubricating system for internal combustion engines, more particularly to the pump construction used and to arrangement thereof relative to the engine casing, as well as the driving means passages, the particular therefor within the engine casing, one of the objects of the invention being to provide an oil pump unit in a lubricating system for internal combustion engines, whichemay be bodily attached and detached as an entirety from the outside of the crank case to thus facilitate the assembly of the motor as a whole.

' Further objects of the invention relate to the construction of the crank casing pumping mechanism, the location of the latter relative to the casing, and the assemblage of parts in a lubricating system for collecting oil from the bottom of. the engine casing and delivering the same to an oil receiving receptacle, from which the same is delivered to i the. engine bearings.

Furthermore, this invention provides various novel details in the arrangement of the particular pump utilized, the driving connections therefor, the arrangement of fluid pump casing and the manner in which the same is attached to the engine casing, as well as other details of construction, as will hereinafter appear from a more complete description of the invention.

It is to be understood that any particular 7 means may be utilized in reducing this inconstruction of Specification of Letters Patent. Patented July 4, 1922, Application filed September 16, 1918. Serial No. 254,226.

Referring to the drawings, it will be seen that Figure I is aside elevation of this invention incorporated with the casing of an internal combustion engine, V

Figure H is a cross-sectional view on line 11-11 of Figure I.

Figure HI is a cross-sectional view on line IIIHI of Figure IV, while Figure IV is a front elevational view of the pump with the cap removed, showing diagrammatically the lubricating passages thereto and therefrom; lhe upper half of the crank case is shown 1n Figure I and referred to by the numeral 10, supported on which are the engine cylinders cast in the block 11, provided with a head 12, as is a well-known construction. Moreover, the "fly wheel casing 13 may also partly be made as a part of the upper half of the casing 10 and completed in its lower half, as will appear from Figure H, from the lower half of the casing 14. The crank shaft '20 of theengine isshown as supported in the bearing 21, while the cam shaft 22 is also illustrated as located in the upper left hand corner of the crank case, as shown in Figure II. I i

lhis invention relates to that type of lubricating systems in which the oil is drawn upvfrom the lower part of the crank casing 14 and pumped into a suitable oil receiving reservoir, from which it is distributed to the various bearings requiring lubrication. To this end an oil reservoir is illustrated at 25, having projecting downwardly therefrom a'passage 26 which terminates in a longitudinally extending conduit 27. Ad

jacent the various bearings inthe engine, a lubricating conveying pipe 28 is connected to the conduit 27 and extends to the various bearings, as, for example, the bearing for the crank shaft. The oil is received in the receptacle 25 from a pipe 30, which is connected at 31 to an upwardly extending nipple 32 on the upper portion 10 of the crank casing. The nipple 32 is connected with a passage from the bottom of the crank casing with a pump interposed therein, and, if desired, the crank casing may be provided with integral passages 35 and 36 to form the conduit whereby oil may be delivered from the bottom of the crank casing by the unitary novel pump construction and forming a part of this invention to the nipple 32', pipe and into the reservoir 25. It is evident that an other form of'conduit extending from t e lower portion of the easing 14 to the upper receiving reservoir 25 having interpose therein any type of pump mechanism, may be used with my invention, one suitable type of pump consisting in a lurality of intermeshing wheels co 38 and 39 having a base plate 40, wliich n ay be castin the proper shape, as will here1nafter appear, to provide the necessary passages desired. The plate 10 is provided w1th a peripheral upwardly extendingwall 41 towhich may be secured the pump cap 42, the .whole mechanism thus formin a unltary, complete and enclosed pumping element.

The gear 38 is secured to a shaft 15, whi ch' is somewhat longer than theshaft 45, wh1le the other gear 39 is carried by a shaft 50 and bears at one end in the cap 42 and has for its other end, an'extended bearing 51.

The plate is provided with a rearwardly extendin I conical extension 52 for sunporting the caring 51, the extension and bearing being made of such length and s1ze that the same ma be inserted laterally into a suitable opening into the upperportion 10 of the crank casing, whereupon the inner end of the shaft will be located adjacent means for driving shaft 50 from the shaft 22, the bearing hub 51 of the shaft 50 may be provided with an overhanging projection 52 and the "shaft 50 is countersunk into the gear 39, as shown, to'take'up any end thrists which might be caused by the drive use Referring to Figure II, it will be seen that the upper end of the passage 35 terminates in anoifset projection portion 60 and that the base plate 40 is provided. with a recess 61 communicating therewith at one end and at the other terminating adjacent a point where the gears 39 and 38 come out of mesh while the plate 40 is also provided with a passage 62 on the opposite side of the passage 61 to deliver the oil forced through the rotary pump into the upwardly extending passage 36.

The operation of my invention will, it is believed be understood from the foregoing description taken in connection with the accompanying drawing. The pumping mechanism is bodily attachable and detachable from the side of the crank casing as a unit and may be readily driven from a longitudinally extending shaft 22, such as the cam shaft of the internal combustion en ine.

The gear 58 on the outer end of the shaft 50, the extension 52and'thebearing 51 being smaller than the openin provided in the casing for the insertion o the unit, the

'unit may be readily assembled. By 'being located on the side of the engine rather than on the end thereof, such assembly is facilitated and a material saving of time effected, an important, advantage when quantity production is being considered and, moreover','the parts may be readily disassembled when desired to inspect, clean, or repair the same. I

t isto be understood that many variations in thedetails of construction described herein, the relative assembly of the parts, character of drivingelements used between the cam shaft 22 and the shaft 50, together with the type of pump employed, may be substituted for the particular arrangement shown herein, and this invention contemplatesbroadly the idea of providing an in sertable and removable umpin unit, which maybe located later'aly of t e casing of the engine and driven nevertheless from one I of the usual rotatable parts of an internal combustion engine, such as the cam shaft 22.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: v

1. In a lubricating system for internal combustion engines, an engine casin an operating shaft rotatably mounted within the casing, a pump housing detachably secured to the side of the casing and having passages leading to and from the pump mechanism from one face of the pump housing, pasas to register with the passages in the pump housing when the pump housin r is secured to the,casing whereby oil is rawn from the casin for distribution through the bearings, an means for operating the pump mechanism from the operating shaft.

2. The combination with one of the operatingshafts of an automobile engine and a casing therefor, of an. actuating member mounted to rotate with said shaft, a sleeve proljecting through said casing, a shaft rotatab y journaled'm said sleeve, a gear carried by said shaft and adapted to beactuated by said actuating member, said sleeve being provided with an opening inside said casing to ermit'flow of lubricant around said shaft an said sleeve, and an oil circulating mechanism operated by the last named shaft.

3. The combination with a casing having sages formed in the casing and so positioned one of the operating shafts of an automobile ilaa her, and -.an oil transmitting mechanism positioned without the by the second shaft. x

4. In combination with the operating shaft of an automobile, of a gear carried by said casing and operated shaft, a housing for said gear and shaft, a

sleeve bearing extending through said housing and secured thereto, a second shaft journaled in said bearingsleeve, a gear on the inner endof said second shaft meshing with said first named gear, and oil transmitting mechani sm operated-by said second shaft.

5. The combination with one of the operating shafts ofan engine, of means associated therewith for operating anoi'l, pump, said means comprising a gear carried by said shaft, a housing for said gear, said housing having a lateral entrance 'leadinginto the housing cavity, a second shaft'j'ournaled in said entrance, and a gear on the inner end .of said second shaft-connecting with said 'first named ear. v v 6. In" combination with one of, the operating shafts of an automoblle engine and a casing therefor, a pum secured to said casing provided with a s eeve projecting into i said casing, means in said sleeve actuated by said shaft for operating'the pumpyand combustion engines a reservoir integrally formed with the easing, the said pump forcing oil to the .reservoir and also from the sleeve to the casin V 7. %n combination with the operating shaft of an automobile, of a gear carriedby said shaft, a casing for said shaft and gear, a pump provided with a housing detachably connected to the casing, a sleeve on the housing and projecting throughthe casing, and means in fsaid sleeveoperatively connected with the gear andfpump for-actuating said pump. 8. In a lubricating system for internal 7 an engine casing provided with integrally formed oil passages and an integrally formed reservoir, a pump was @3 housing detachably secured to the casing and provided with integrally formed horizontally disposed oil passages aligning with the passages in the casing, and a conduit connecting the aligned passages with the reservoir.

9. In a lubricating system for internal combustion engines, an engine casing provided with integrally formed oil assages, a pump housing detachably secure to said casing and provided with integrally formed passages allgning with the passages in the casing, and a pump disposed between the 7 passages in the pump housing. a 10. In a lubricating system for an internal combustion engine, ,a casing having oil passages formed therein, a rotatable memher in said casing, a detachable oil pump havinfg passages formed therein and having a rotatable member adapted to be driven by said first rotatable member, and means for securing said pump to said casing with said two rotatable members in driving engage- ,ment with :each other and with the passages in the pump communicating with the passages in the casing.

11. In a lubricating system for an internal combustion engine, an engine casing having oil passages formed in a wall thereof and terminating in a side face, a rotatable member in said casing, a detachable oil casing, and means for securing saidpump to saidengine casing with said driving member in-engagement with said rotatable member and with the side face of said pump casing against the side face of said engine casing and the passages in the pump 'casing in registry with the passages in the engine casing.

In testimony whereof Iaflix m signature.

\ HARRY E. R OADS. 

